Alert archive / Louisiana / Tornado Warnings in 2007

Tornado Warning 9, NWS Shreveport, LA

February 24, 2007Union Parish, Louisiana; Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Feb 24, 2007, 3:11 PM CST for Union Parish, Louisiana; Union County, Arkansas. It was in force for 49 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Feb 24, 2007, 3:11 PM CST (21:11 UTC)
Expired
Feb 24, 2007, 4:00 PM CST
In force
49 min
Issued by
NWS Shreveport, LA
Area
Counties, with a storm outline in the text

Counties Union County, AR, Union Parish, LA

The radar

The Shreveport radar (KSHV), 139 km from the middle of the area, began a volume at 21:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Feb 24, 3:15 PM CSTTSTM WND DMGJunction City, ARROOF DAMAGE TO PHARMACY. REPORTED BY TV MEDIA.
Feb 24, 3:15 PM CSTTORNADO 15 N Spearsville, LAROOFS DAMAGED NEAR TAYLORTOWN AND LOCKHART. PART OF THE DAMAGE TRACK THAT WAS RATED AN EF1.
Feb 24, 3:15 PM CSTTORNADO5 N Spearsville, LAA TORNADO TOUCHED DOWN ABOUT 1 MILE WEST OF THE TAYLORTOWN COMMUNITY AND TRACKED 1 MILE NORTHEAST ACROSS MIKE TAYLOR AND CHARLES ROADS JUST WEST OF THE LOCKHART COMMUNITY. NUMEROUS TREES WERE BLOWN OVER OR HAD THEIR TOPS SHEARED OFF. SEVERAL ROOFS WERE DAMAGED
Feb 24, 3:20 PM CSTTORNADO7 N Spearsville, ARTHIS IS A CONTINUATION OF THE UNION PARISH TORNADO. THIS TORNADO CROSSED STATELINE ROAD AND HIGHWAY 7...AND EVENTUALLY OVER SEWELL ROAD BEFORE MOVING OVER A HEAVILY WOODED AREAS. NUMEROUS TREES WERE BLOWN DOWN PARTICULARLY OVER STATELINE ROAD...WITH A DAMAGE W

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 24, 8:47 AM CSTTornado Watch PDSSPC9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.2 hours before the alert went out and 130 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2007-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 144 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2007-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 513 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
144 J/kg
Mixed-layer CIN
-313 J/kg
Mixed-layer LCL
511 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
513 m²/s²
0-3 km storm-relative helicity
661 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KSHV 242111
TORSHV
ARC139-LAC111-242200-
/O.NEW.KSHV.TO.W.0009.070224T2111Z-070224T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
311 PM CST SAT FEB 24 2007

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  UNION PARISH IN NORTH CENTRAL LOUISIANA
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS

* UNTIL 400 PM CST

* AT 311 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 25 MILES        
  SOUTHWEST OF STRONG...OR NEAR JUNCTION CITY...MOVING NORTHEAST AT  
  60 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  6 MILES NORTHWEST OF STRONG BY 335 PM CST

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A 
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE 
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  UNION PARISH IN NORTH CENTRAL LOUISIANA
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS
UNTIL 400 PM CST.

LAT...LON 3302 9272 3281 9271 3316 9212 3329 9246

$$

15
1 follow-up statement
000 
WWUS54 KSHV 242142
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
338 PM CST SAT FEB 24 2007

ARC139-LAC111-242200-
/O.CON.KSHV.TO.W.0009.000000T0000Z-070224T2200Z/
UNION AR-UNION LA-
338 PM CST SAT FEB 24 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CST FOR UNION 
COUNTY ARKANSAS AND UNION PARISH LOUISIANA...

AT 338 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 1 MILE NORTH OF  
STRONG...OR ABOUT 12 MILES NORTHWEST OF HUTTIG...MOVING NORTHEAST AT 
60 MPH. THIS STORM WILL AFFECT THE NEW LONDON COMMUNITY BY 345 PM. 
IN ADDITION...QUARTER SIZED HAIL WILL BE POSSIBLE WITH THIS STORM.

AN ADDITIONAL THUNDERSTORM SHOWING SIGNS OF WEAK ROTATION WAS 
INDICATED NEAR LILLIE IN NORTHWEST UNION PARISH...MOVING NORTHEAST 
AT 55 MPH. A TORNADO MAY FORM WITH THIS THUNDERSTORM ACROSS EXTREME 
NORTHERN UNION PARISH NEAR THE BEECH GROVE AND TAYLORTOWN 
COMMUNITIES WITHIN THE NEXT FEW MINUTES. 

HEAVY RAINFALL MAY OBSCURE THESE POTENTIAL TORNADOES. TAKE COVER NOW 
IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO 
A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CST SATURDAY AFTERNOON
FOR NORTHERN LOUISIANA AND SOUTHWESTERN ARKANSAS.

LAT...LON 3302 9272 3281 9271 3316 9212 3329 9246

$$

15

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 9:59 AM CSTSevere Thunderstorm WarningSHVCaddo61 min
Feb 24, 12:22 PM CSTTornado WarningSHVCaddo, De Soto20 min
Feb 24, 1:10 PM CSTTornado WarningSHVClaiborne50 min
Feb 24, 1:28 PM CSTTornado WarningSHVUnion53 min
Feb 24, 2:24 PM CSTTornado WarningSHVDe Soto36 min
Feb 24, 2:41 PM CSTSevere Thunderstorm WarningSHVClaiborne49 min
Feb 24, 2:58 PM CSTSevere Thunderstorm WarningSHVBienville, Bossier, Red River, Webster32 min
Feb 24, 3:00 PM CSTTornado WarningSHVClaiborne30 min
Feb 24, 3:36 PM CSTSevere Thunderstorm WarningSHVBienville24 min
Feb 24, 4:19 PM CSTSevere Thunderstorm WarningSHVUnion56 min
Feb 24, 5:09 PM CSTSevere Thunderstorm WarningSHVOuachita51 min
Feb 24, 5:15 PM CSTSevere Thunderstorm WarningSHVJackson30 min
Feb 24, 5:34 AM CSTRed Flag WarningSHVHoward, Little River, Sevier12 hr
Feb 24, 10:44 AM CSTTornado WarningSHVHempstead31 min
Feb 24, 10:59 AM CSTTornado WarningSHVNevada46 min
Feb 24, 11:20 AM CSTSevere Thunderstorm WarningSHVColumbia, Union55 min
Feb 24, 11:28 AM CSTTornado WarningSHVColumbia, Union47 min
Feb 24, 12:15 PM CSTSevere Thunderstorm WarningSHVLafayette, Nevada60 min
Feb 24, 3:57 PM CSTSevere Thunderstorm WarningSHVUnion33 min

Nearby

Tornado Warnings in Louisiana, 2007Tornado Warnings in Arkansas, 2007Every tornado warning in 2007Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.